h o ppner



(No Model.)

2 3 SheetsSheet 1. H. FLAD & F. HOPPNER. GAR BRAKE. No. 299,122.

Patented May 2'7, 1884.

N. PETERS, Phola-Lnhognphor. Washington. D. c.

(No Model.) 3 Sheets-Sheet 3.

H. FLAD & F. HOPPNER.

GAR BRAKE.

N0. 299,122. Patented May 27. 1884.

WITNESSES n. vzmzs Pfwtvulhognpmr. Washington, 11. c.

HENRY FLAD AND FRITZ HOIPNER, OF ST. LOUIS,

MISSOURI, ASSIGNORS .TO THE MALLINGKRODT BRAKE COMPANY, OF SAME PLACE.

C AR -BRAKE.

SPECIFICATION forming part of Letters Patent No. 299,122, dated May 27, 1884.

Application filed December 17, 1883. (No model.)

To 00% whom it may concern:

Be it known that we, HENRY FLAD and FRITZ HorPNER, of St. Louis, in the county of St. Louis and State of Missouri, have invented certain new and useful Improvements in Brakes for Railroad-Cars; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to an improvement in brakesfor railroad-cars, the object being to provide an arrangement of parts whereby the weight of the car is utilized in forcing said brake against the car-wheels; and it consists in certain novel features of construction and combinations of parts, as will be hereinafter described, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a side view of our improvement. Fig. 2 is an end view thereof, partly in section and partly in elevation. Fig. 3is atop plan view. Fig. at is a view taken on the line :0 a: of Fig. 2. Fig. 5 is a detached sectional view of he screws by means of which the car-body is elevated.

A represents a car-truck of the ordinary construction, and Bthe wheels, secured to the axles O, journaled in boxes in the ordinary manner.

To the truck A, and forming a part thereof, is secured the vertical guide-bars D, between which rest the ends of the vertically-movable bolster E, upon which the weight of the carbody falls.

F represents the spring-board, placed below the bolster E and rigidly secured to the truck, and provided at its opposite ends with the cylindrical boxes G, which latter are bolted or otherwise secured to the spring-board. These boxes are internally provided with the doubleincline plane H, the highest point of said plane being somewhat below the top edge of the box. In this box is adapted to fit the screw or hearing I, the lower end of which is also formed with a double incline, K, adapted to conform with the incline H, the said screw or bearing being provided with a pulley, J, to which the outer ends of the ropes XV are secured. The upper end of each of these screws is provided with a socket, L, in. which forming the lower part of the screw; but this tendency is overcome by the chains W, which will be referred to further on.

To the spring-board F, or to the truck, are loosely suspended the brake-beams O by means of the hangers l, to which beams O are secured the brake-shoes and also thelower ends of the brake-levers P, which latter are situated on opposite sides of the spring-board and loosely connected by the connectingrods Q.

To the spring-board Fis secured a bearing, It, in which is journaled the lower end of a vertical shaft, S, said shaft also passing through a sleeve secured to the bolster E, and provided with a pulley, U, near its lower end. XVire ropes or chains secured to the pulleys J, and passing around them in opposite directions, connect them with the pulley U, the ropes being secured to the opposite sides of the latter. By thus connecting the pulleys J with the pulley U both screws are operated simultaneously and in the same direction, the ropes WV winding around the pulley U in the same direction when the latter is turned. The vertical shaft S is also provided with a pulley, T, at its upper end, around which passes the rope or chain X, which latter is also attached to the upper end of one brakelever P, the upper end of the opposite lever being pivotally secured to the car-truck by means of the link V. It will now be readily seen that when the rope or chain X is pulled in the direction indicated by the arrow the pulley T is turned, which, through the intervention of the shaft S, turns the pulley U, which is secured to the lower end of the latter. The chains or ropes \V, secured to the pulley U, will wind thereon, and thereby revolve the pulleys J, which will turn the screws I in the boxes G, thereby elevating the bolster E and raising the car-body. The rope or chain X,

being also attached to the upper end of thelever P,draws the upper end of saidlever in the direction of the strain, and forces the brakebeams attached to the lower ends thereof away from the car-wheels, and thereby releases the pressure on the brake-shoe, the brake-levers by means of the connecting-rod Q working simultaneously. When the strain on the rope or chain X is released, the weight of the carboX will turn the screws I in the boxes G, which, through the intervention of the chain or rope, has the effect of turning the pulleys U and T, thereby winding the rope X around the pulley T and drawing the upper end of the lever in that direction, and forcing the brake-shoes against the wheels.

Our improved brake is more particularly adapted for use on freight-cars, but is applicable to passenger-cars, and can be operated by hand, steam, or air'power, as desired.

It is evident that many changes might be resorted to without departing from the spirit of our invention-as, for instance, instead of the upper portion of the two-part screw fitting into the lower, the lower portion might be made to fit within the upper. Therefore we would have it understood that we do not limit ourselves to the exact construction and arrangement of parts shown and described; but

Having fully described our invention, what we claim as new, and desire to secure by Letters Patent, is- 4 1. The combination, with a vertically-movable bolster and two-part screws on which the bolster rests, of braking mechanism and devices for connecting the latter with the twopart screws, substantially as set forth.

2. The combination, with a vertically-movable bolster and two-part screws on which the bolster rests, of braking mechanism connected to the screws and devices for turning said screws and operating the said braking mechanism, substantially as set forth.

3. The combination, with a car-truck and a springboard secured thereto, of two-part screws secured to opposite ends of said board, a vertically-movable bolster, braking mechanism, and devices for raising-or lowering said bolster and operating the brake mechanism, substantially as set forth.

4. The combination, with a car-truck and a spring-board secured thereto, .of two-part screws secured to the latter, a vertically-mow able bolster connected to said screws, brake mechanism, pulleys, and ropes or their equivalents for raising or lowering said bolster and operating the brake mechanism, substantially as set forth. 1

5. The combination, with a car-truck and a spring-board secured thereto, of two-part screws secured to the latter, a vertically-movable bolster connected with said screws by intermediate springs, brake mechanism, pulleys, and ropes or their equivalents for raising or lowering and operatingthe brake mechanism, substantially as set forth.

6. The combination, with a car-truck and aspring-board secured thereto, of a verticallymovable bolster, two-part screws between said bolster and board and provided with pulleys, brake mechanism, a shaft connecting said bolster and board and provided with a pulley, and ropes or their equivalents connected with and passing around said pulleys, and adapted to raise or lower said bolster and operate the brake mechanism, substantiallyas set forth.

7. The combination, with a car-truck and a spring-board secured thereto, of two-part screws situated between the spring-board and bolster, provided with pulleys, a verticallymovable bolster, a shaft connecting said bolster and board and provided with a pulley, and ropes or ehainsconnected to opposite sides of said latter pulley, and connected with said former pulleys and passing around the same in opposite directions, substantially as and for the purpose set forth.

8. The combination, with a truck, springboard, and movable bolster, of two-part screws connecting said bolster and board, a rod connecting said board and bolster and provided with pulleys, brake mechanism secured to the spring-board, and ropes or chains connecting said pulleys and screws, adapted to operate the brake mechanism,substantially as set forth.

9. The combination, with a truck, springboard, and movable bolster, of two partial screws working upon each oth er and connecting said bolster and spring-board, a rod connecting said bolster and board and provided with pulleys, brake-beams secured to said board and provided with brake-shoes, brake-levers, and ropes or chains connecting said screws with said pulleys and adapted to operate the brakelever, substantially as set forth.

10. The combination, with thetruck, spring board, and movable bolster, of partial screws situated between the spring-board and bolster, pulleys, brake mechanism, and ropes or chains, all of the above parts combined and adapted to operate as described.

In testimony whereof we have signed this specification in the presence of two subscribing witnesses. HENRY ELAD. FRITZ HOPPNER.

Witnesses:

EMORY S. Fos'rnn, GUsr. M. LUDWIGS.

loo 

